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Lesson Example Discussion Quiz: Class Homework

Step-1

Title: Subtracting signed numbers

Grade: 6-a Lesson: S1-L3

Explanation: Hello Students, time to practice and review the steps for the problem.

Lesson Steps

Step	Type	Explanation	Answer
1	Problem	Subtraction of integers: \$ (+ 5) - (+ 7) \$
2	Hint	The two integers are	\$+ 5 , + 7 \$
3	Step	Subtraction problem turns into an addition problem	\$ (+5) + (-7) \$
4	Formula:	If we follow the addition rule of positive and negative integers	\$ (+) + (-) = "use the sign of larger absolute value number" \$
5	Step	Let us add both the positive and negative integers	\$ 5 + (-7) \$
6	Step	After adding both positive and negative integers	\$ 5 - 7 \$
7	Step	After Subtraction	\$ - 2 \$
8	Step	Therefore, the subtraction of integers is \$ - 2 \$.
9	Choice.A	This is not correct because the operation being performed is the subtraction of two positive integers: + 5 and + 7	-4
10	Choice.B	This is correct because it accurately represents the result of subtracting 5 from 7	-2
11	Choice.C	This is not correct because the subtraction of positive integers (+ 5) and (+ 7) results in a negative integer, specifically - 2	-1
12	Choice.D	This is incorrect because it does not accurately represent the result of subtracting 5 from 7	-3
13	Answer	Option	B
14	Sumup	Can you summarize what you’ve understood in the above steps?

Step

Type

Explanation

Answer

Problem

Subtraction of integers:
\$ (+ 5) - (+ 7) \$

Hint

The two integers are

\$+ 5 , + 7 \$

Step

Subtraction problem turns into an addition problem

\$ (+5) + (-7) \$

Formula:

If we follow the addition rule of positive and negative integers

\$ (+) + (-) = "use the sign of larger absolute value number" \$

Step

Let us add both the positive and negative integers

\$ 5 + (-7) \$

Step

After adding both positive and negative integers

\$ 5 - 7 \$

Step

After Subtraction

\$ - 2 \$

Step

Therefore, the subtraction of integers is \$ - 2 \$.

Choice.A

This is not correct because the operation being performed is the subtraction of two positive integers: + 5 and + 7

-4

Choice.B

This is correct because it accurately represents the result of subtracting 5 from 7

-2

Choice.C

This is not correct because the subtraction of positive integers (+ 5) and (+ 7) results in a negative integer, specifically - 2

-1

Choice.D

This is incorrect because it does not accurately represent the result of subtracting 5 from 7

-3

Answer

Option

Sumup

Can you summarize what you’ve understood in the above steps?